(5 out of 5) by Michael M.

"Ok, I was on a trip earlier this year and my mask got noisy and I didn't know why.....I found a couple of holes in the plastice support body....silly me, I attached a couple of hoses to the holes just to move the noise away from me (I was so tired at this time that blocking them didn't seem to make the mask work right.)....I happend to stop by cpcp.com to check on another mask part and noticed these ports caps were what was supposed to cover the holes....ordered them, put them on and now I am sleeping better again."